asp.net下載往上圖片

    protected void Page_Load(object sender, EventArgs e)
    {
        string sRmFile = " http://zi.youkuaiyun.com/1000huawei.gif";
        string sSavePath = @"c:/1000huawei.gif";
        System.Net.WebClient wc = new System.Net.WebClient();
        try
        {
            wc.DownloadFile(sRmFile, sSavePath);
            Response.Write("远程文件已经下载完毕！");
        }
        catch (System.Exception ex)
        {
            Response.Write("error:" + ex.Message.ToString());
        }
        img.ImageUrl = sSavePath.ToString();
    }